The fake photos were self-evidently shared enough to receive some media coverage, and the article cites retweet counts. I'm not clear on the relevance of you not having personally spotted these specific ones.

I took a look at the Atlantic link you included, and I'm not seeing any photos of bloodied protesters like the fake ones had. I don't doubt that with rubber bullets and batons flying there were some injuries, but the "fake" photos still aren't accurate depictions of them if they're from previous incidents.